DE2045131A1 - Sliders for zippers - Google Patents

Description

: Textron Inc.

^T Pr ovidence a Rhode Island

'USA September 11, 1970

Sliding body for zippers

_: The invention relates to slide fasteners and, more particularly, to this J ^

! ■■ "'■ ι m

■ serving sliding bodies. ■ -

In U.S. Patents No. 2983.08, 3127.654 and 3239.9o5 zippers of a known type are shown, in which in the I ' Distance to each other located side or leg parts with HiIf ^ : a connecting strut body has a Y-shaped channel in between; ι see form, zippers of this type have a pull tab ' With various types of automatic interlocks for the ■ i ■ f

! Sliding body. None of the zippers are of known type.!

; However, the special problem of deformation of the sliding body is;

has been known when it is subjected to pressure when the fabric connected to the zipper is repeatedly ironed. Press- ϊ. or require "ironing machines for dry cleaning that high" pressure, that forces are applied, which thus are also effective on sliding ■ As a result of strong pressure load sliding conventionally embodiment bad-course and _cause;.. cutting into the overlying tissue case sliding bodies of known shape, the pressure force of the ironing and pressing device on the top side or leg body at each side; passed the connecting strut, whereby a bending of the fJchenkelkörpers is effected ^r.

According to the invention, a sliding body for zippers was created, which has a pair of spaced apart leg portions, a pull tab which is operable on a : Face of one that is supported leg, and a post or

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BATH ORIGINAL

Strut element, which at one end the legs together connects to form a substantially Y-shaped channel therebetween, the sliding body still being so formed 13t that a wall body on the surface of one of the legs a predetermined height of the sliding body in a direction transverse to the surface of the one leg determined, and that the wall body over the post member is arranged, whereby one on the wall body applied load is transferred to the post element to to limit the reduction in height of the sliding body to a minimum.

Thus, according to the invention, a solution was found through which the deformation of sliding bodies when pressing or ironing pressures are exerted can be reduced to a minimum. According to the invention A sliding body for zippers was also created, which resists cutting into and indenting the fabric.

According to the invention, the one on the sliding body of the zipper applied bending movement reduced to a minimum.

The present invention is explained using an exemplary embodiment with reference to the accompanying drawings.

: Fig. 1 of the drawings shows an isometric view of an er ' inventive sliding body of the zipper;

Fig. 2 is an exploded perspective view of the slider shown in Fig. 1;

Figure 3 is an isometric view of the slider shown in Figure 1 with parts broken away;

Fig. 4 is a sectional view taken along line U-U in Fig. 1;

Fig. 5 is a graph showing the effects of exercising a pressure induced decrease in height on a

Sliding body of normal embodiment compared to a Gleitj body according to the invention is shown design;

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1098 19/109? _{ΡΛ (Λ} ■

BATH ORIGINAL

. iFig. 6 is a graphic representation of the working movement of a

j sliding body zn as a function of the pressure exerted;

'Fig. 7 is a graph of resilience

j versus pressure load and the error range of a

; Sliding body of normal design compared to a sliding body · ¹ "

■ ■ j. body according to the invention.

j In FIGS. 1 through 4 of the drawings. the present invention j of a sliding body Io shown. This has a lower leg 12 with transversely or upwardly extending flanges IH and 16 located on the edge i. The flanges I ¹ + and 16 are j arranged on the rear sides. The front part of the vision; ^ jkels 12 is rounded in the form of a semicircle. The leg 12 is divided into a pair of longitudinal channels by an upwardly extending attachment 18 located in the middle. The attachment 18 has a right-angled cross-section and extends from the rear side of the Leg 12 to the front of the same, where it is united with a strut 2o. —-4-D-ie-Str-ebe-2o. Bildei .__ fiinen_Jialsj ^ ji_.J) ^^ _ ^ ajitenkopf _} through which "I the one-piece Connection between the lower leg 12 and a further, upper leg 22 is made. The upper I leg 22 is comparable to the lower leg I ; 12 manufactured at a distance from this. The leg 22 has: a, ■ semicircular front part and a square-framed \ back. This is with downward extending ^ ä

flanges located on the edge 2M and 2 6 and equipped with a downwardly extending shoulder 28. The approach 28 runs ■ into the strut 2o. The flanges 2M and 26 and the extension 28 on the upper leg 22 are aligned at a distance from the flanges 14 and 16 located on the edge and the extension 18 of the lower leg 12 and these parts opposite one another.

A housing for the automatic locking spring of the sliding body , is in one piece, arranged on the front upper part of the leg 22. J The housing has the shape of an upper, U-shaped structure with a front wall 3o, which are located at a distance from one another Side walls 32 and 34 connects to one another. The front

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wall 3o is formed in one piece with the upper leg 22 and represents an extension of the same. It forms a smooth one Front surface which is formed by the connecting strut 2o. The upper edges of the side walls 32 and 34 are provided with inwardly directed lugs 36 and 38. A right-angled Opening 4o is cut from the upper leg 22 and is located on its central longitudinal axis, but somewhat at a distance from the free ends of the side walls 32 and 34 of the housing. A couple of sectors or walls 42 and 4 4 serving for mounting from the upper leg 2 2 upwards and are axially aligned at a distance from one another. You are in alignment with the associated side walls 32 and 34. The top of the walls 4 2 and 44 is arcuate and likewise with inwardly directed Approaches 46 and 4 8 provided. Referring to Figure 2 of the drawings, the leading end of the sector or wall 4 2 is near the end the opening 4o on one side, while the wall 44 is on the opposite side of the opening 4o.

A pull tab 5o for the sliding body is provided at one end with a right-angled opening, which the sectors or walls 42 and 44 includes. A cross bar or rotating element 5 2 extends over the space between the opening 4o and over the free ends of the side walls 32 and 34.

The automatic locking spring consists of a strip of Spring material which is essentially U-shaped. One leg 5 4 of the blocking spring has a curved end 5 6 on, which lies over the crossbar 52 of the pull tab. The end 5 6 ends in a clamping or blocking pin 58, which normally extends transversely to the upper leg 22 and is slightly smaller in dimension than the opening 4o, so that it extends into the space between "legs 12 and 22. The opposite end of leg 54 is Connected via a curved section 6o to the upper leg 6 2, which comes to lie above the leg 54. The thigh 62 is made wide enough that it comes to lie under the lugs 36 and 38 of the housing and is held by them, as can be seen from Fig. 1 of the drawings. At the curve

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Shaped section 6o opposite end -is the leg 62, expanded in the form of a central area 64. This area 'is designed in its width so that its front edges the; j free ends of the side walls are oriented opposite to 32 and 34, while the rear edges of the front ends of the sec- ·> motors 42 and 44 oppositely arrange _(are t. Although the region 64 of the spring is not in contact with the adjacent edges of the walls 32, 34 , 42 and 44, it is nevertheless effective to prevent displacement of the locking spring. As can be seen from Figures 2 and 4 of the drawings, the enlarged area 64 is connected to a curved leg 66 which is the same width as the leg 62. The limb 66 has a pin 68 of reduced dimensions, which rests on the upper side of the limb 22.

It is known to be the sliding body of the present invention j to open and close the interlocking head elements ; of the zipper by the gripping body Io re j ; is moved relative to these header elements. During this loading ■ movement, the pull tab 5ο is different from that shown in FIG Position so raised that by the lifting and pulling force of the Blocking pin 5 8 with the help of the cross bar 52 out of the path of the Interlocking elements is moved out, i.e. the blocking pin 5 8 is from its position shown in Fig. 4 upwards emotional. ■

According to the invention there is no need for a separate cover element for the automatic blocking spring. The automatic The locking spring is held in its working position on the sliding body with the help of the lugs 36 and 38; the approaches 36 and 38 are therefore over the adjacent edges of the upper leg 62 the feather. The approaches described, used for holding have the further advantage that when installing the locking spring there is enough space. As can be seen from Figure 4 of the drawings results in the locking spring is not exposed to external forces, which could occur when ironing. Modern devices for Dry cleaning and ironing are not trained in such a way that special care is taken when ironing an item of clothing

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for the zipper is guaranteed; on the contrary _; Ironing machines of the type described not only press on the garment, but also exert a compressive force on the zipper attached to the garment. In this way, the zip fastener is exposed to heavy loads during ironing, which has hitherto led to the deformation and destruction of zip fasteners.

The particular advantage of the present invention is that the repeated ironing of the garment The load applied to the zipper is no longer borne by the leg of the sliding body, but on the connecting one Strut body of the sliding body is derived. For example, the contact pressure of a pressing or ironing machine is applied directly applied to the upper edge of the front wall 3o and forwarded from there to the strut 2o. This: has enough mass to be without deformation to withstand this burden. The wall 3o acts not only as part of the housing, around the blocking spring to hold and lead, but at the same time has a function insofar as it puts the press or ironing head directly on the connecting Strut 2o transfers.

In Fig. 5 of the drawings test results are shown on a conventional sliding body and on a sliding body further developed according to the invention. During the tests, a pressure of 68 kp was exerted with the help of a so-called Hoffmann press. Before applying pressure, the height of the sliding body of the normal embodiment was measured to be 6.451 mm. After applying the first pressure, the height of the glider of the normal embodiment was reduced to 6 ₃ 35o mm, while the height of the same glider was gradually reduced to 6.172 mm after the second, third, fourth and fifth pressing cycles. Accordingly, the total decrease in height was of the sliding body of normal embodiment 0.279 mm. For comparison, the slider according to the invention had an initial height of 6.553 mm; after being pressured five times, it was only reduced to a height of 6.5o2 mm. That is, the total decrease in height was _; ο, ο 51 mm »

1098.19 / 1093

It «,

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In Fig. 6 of the drawings, the results of a second investigation on a sliding body of conventional embodiment i and on a sliding body fiction according to embodiment again ', given, which one with the help of a so-called Hoffmann press
Pressure of 68 kp. In this case, a pressure was the "operation of the zippers measured as a function of the resistance \ with respect to the operation after ι five times one after the other follow dena exerting, in sizes of kp. | The results relating to the ordinary design slider . shape are shown in dashed curves for both opening and closing movements. In the same way, the results with regard to the further developed sliding body for the opening and closing movements are shown in solid lines or curves. Before any pressure was applied
the working or pulling resistance for both sliding bodies, ie! for the sliding body of the normal embodiment and for the sliding body j further developed embodiment according to the invention, measured with 0.425 kj. After applying pressure five times, the sliding body of the normal embodiment had a resistance to the Ί operation of 1.84o kp and 2.0 kp for the opening and closing movements. This represents an increase in resistance
of about 1,425 and 1,575 kp with respect to the operation of the normal embodiment slider.

The same investigation of a further developed sliding body
showed an increase in resistance, starting from o,> 425 kp
to o.539 kp and o.595 kp for the opening and closing movements. This represents an increase in resistance of about
o, Ho and O ₅ ITa kp in the further developed sliding body.

In Figure 7 of the drawings are the test results of a third
Investigation carried out on a sliding body of normal embodiment and shown on a further developed sliding body; with these sliding bodies was with the help of a so-called
Baldwin test device applied an increasing load. In this case
was the height of the two sliders on their mouthpieces, ie
at the free end of the rear parts of the legs 12 and 22
measured, in other words at the left end of the shown in Fig. 4

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513t

put gliders. From Fig. 7 of the drawings it can be seen that with a load of 22.7 kp there was no change in height compared to an initial dimension of 0.558 mm. At a load of 34.0 kp, a decrease in height began to occur on the sliding body of the normal embodiment; the slider normal embodiment was kp at a load of 45, ¹ I in its height on o, reduced 5 mm 33rd With a load of about 6 3.5 kp, the height of the slider of the normal embodiment was reduced to 0.432 mm. At this point of the decrease in height, the sliding body can be regarded as defective, since the height is not sufficient to allow the head elements of the zipper that are in engagement with one another to slide through. In comparison, the sliding body according to the invention was not subject to any decrease in height until the load exceeded about 122 kp; only after the load exceeded about 163 kp was a failure of the sliding body, consequently an entry into the fault area, ascertainable.

From the in FIGS. 5, 6 and 7 shown graphs it can now be seen that the sliding body of the present invention is better suited to repeated compressive loads to withstand without being subject to significant deformations. This is possible because the upper Structure of the sliding body is designed so. That the bending moment on the connecting strut is significantly reduced. The reason can be seen in the fact that the compressive force is passed directly via the upper structure of the sliding body into the connecting strut body will. In addition, said upper strut body on the sliding body represents an additional support surface, which not only resists cutting and embossing of the tissue, but also converts the pressure force into a moment that partially Cancels buckling or breaking moment on the sliding body.

The front wall 3o carrying the load is slightly larger in width than the connecting strut 2o, which ensures that that essentially all of the compressive force is passed on to the strut 2o, while very little (if any) the compressive force on the legs 22 or 12 is derived.

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Claims (9)

Claims lly sliding body for zippers made up of a pair of spaced legs, with a pull tab which is operatively carried on a surface of one of the legs, and with a post element which connects the legs at one end and lent one essentially between them Y-shaped channel, characterized in that a woad body (3o) on the surface of one of the legs (22) determines a predetermined height of the sliding body (lo) in a direction transverse to the surface of one leg (22), 'and that the Wall body (3o) is arranged above the post element (2o), whereby a load exerted on the wall body is transmitted to the post element (2o) in order to limit the reduction in height of the sliding body (lo) to a minimum. 2. Slider according to claim 1, characterized in that the Wall body (3o) is arranged near rather the front edge of one leg (22). 3. Sliding body according to claim 1 or 2, characterized in that that the wall body (3o) is arranged flat with the front edges of the legs (12, 22) and the post element (2o) « 4. Sliding body according to one of claims 1 to 3, characterized in that the wall body in the transverse direction on the Level of one leg facing away from the other leg ■ Direction extends and that an operational connection 109819/1093 -Ir. - r between the pull tab (5o) and one leg (22). 5. Sliding body according to claim 4, characterized in that the operational connection consists of a clamping spring (54, .... 68) and from a holding housing (3o, .... 38) for the clamping spring is formed on one leg, and that the wall body (3o) represents an end wall serving for the supporting housing. 6. Slider according to claim 5, characterized in that the one leg (2 2) has a central opening (4o) comprises that the clamping and blocking spring consists of an elongated, U-shaped strip, one end of which (56) a blocking pin (58) extends through the opening (4o) in the Y-shaped channel, and that the pull tab (5o) has a transverse rod (52) which extends below the one end (56) of the spring is arranged to move the locking pin on the Y-shaped channel so that the sliding body is relocatable. 7. Slider according to claim 5 or 6, characterized in that the one leg is a pair located at a distance from one another Wall body (32, 34), which are connected at one end to the wall body (3o) and with this an im form substantially U-shaped housing, and that a retaining lug (36, 38) on each of the spaced apart Wall body is arranged to hold the locking spring in the installed position on the housing. 8. Sliding body according to one of claims 4 to 7, characterized in that that the front edges on the front part of the legs, on the post element and on the wall body are flat with each other end so that they form a smooth leading edge of the slider. 9. Sliding body according to one of the preceding claims, characterized in that the wall body (3o) is large in its width this is dimensioned as the post element (2o). 1 0 98 1 9 / Ί 0 93 I f Read more